001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.activemq.tool.reports;
018
019import java.util.Iterator;
020import java.util.List;
021
022public final class PerformanceStatisticsUtil {
023    private PerformanceStatisticsUtil() {
024    }
025
026    public static long getSum(List numList) {
027        long sum = 0;
028        if (numList != null) {
029            for (Iterator i = numList.iterator(); i.hasNext();) {
030                sum += ((Long)i.next()).longValue();
031            }
032        } else {
033            sum = -1;
034        }
035        return sum;
036    }
037
038    public static long getMin(List numList) {
039        long min = Long.MAX_VALUE;
040        if (numList != null) {
041            for (Iterator i = numList.iterator(); i.hasNext();) {
042                min = Math.min(((Long)i.next()).longValue(), min);
043            }
044        } else {
045            min = -1;
046        }
047        return min;
048    }
049
050    public static long getMax(List numList) {
051        long max = Long.MIN_VALUE;
052        if (numList != null) {
053            for (Iterator i = numList.iterator(); i.hasNext();) {
054                max = Math.max(((Long)i.next()).longValue(), max);
055            }
056        } else {
057            max = -1;
058        }
059        return max;
060    }
061
062    public static double getAve(List numList) {
063        double ave;
064        if (numList != null) {
065            int sampleCount = 0;
066            long totalTP = 0;
067            for (Iterator i = numList.iterator(); i.hasNext();) {
068                sampleCount++;
069                totalTP += ((Long)i.next()).longValue();
070            }
071            return (double)totalTP / (double)sampleCount;
072        } else {
073            ave = -1;
074        }
075        return ave;
076    }
077
078    public static double getAveEx(List numList) {
079        double ave;
080        long minTP = getMin(numList);
081        long maxTP = getMax(numList);
082        if (numList != null) {
083            int sampleCount = 0;
084            long totalTP = 0;
085            long sampleTP;
086            for (Iterator i = numList.iterator(); i.hasNext();) {
087                sampleCount++;
088                sampleTP = ((Long)i.next()).longValue();
089                if (sampleTP != minTP && sampleTP != maxTP) {
090                    totalTP += sampleTP;
091                }
092            }
093            return (double)totalTP / (double)sampleCount;
094        } else {
095            ave = -1;
096        }
097        return ave;
098    }
099
100}